package filter;

import javax.servlet.*;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import java.io.IOException;
import java.util.logging.LogRecord;

public class LoginFilter implements Filter {

    @Override
    public void init(FilterConfig filterConfig) throws ServletException {

    }

    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        HttpServletRequest httpServletRequest = (HttpServletRequest)servletRequest;
        HttpSession session = httpServletRequest.getSession();
        Object account = session.getAttribute("account");
        if (null == account ) {
            System.out.println("拒绝");
            servletRequest.getRequestDispatcher("login.jsp").forward(servletRequest, servletResponse);
        } else {
            System.out.println("通过");
            filterChain.doFilter(servletRequest, servletResponse);
        }
    }

    @Override
    public void destroy() {

    }
}
